Power & Batteries

SKU: AF-2777 | Brand: Adafruit

This USB to DC booster cable has an integrated boost converter that steps up 5V USB power to 9V DC, output through a centre-positive 2.1 mm barrel jack. It's a convenient way to power 9V devices from any USB port — wh...

SKU: SF-COM-00746 | Brand: SparkFun

A 10 F (farad) supercapacitor rated at 2.5 V. This compact energy storage device can be charged and slowly discharged to power low-current systems for extended periods. Two can be connected in series for 5 F at 5 V. ...

SKU: DF-FIT0253 | Brand: DFRobot

A 7.5 V DC wall adapter power supply with a DC 2.1 mm barrel connector, compatible with the Arduino power jack. The 7.5 V output is well suited for Arduino projects that need more than 5 V but where 12 V may be excess...

SKU: DF-DFR0250 | Brand: DFRobot

A boost converter module that takes two AA batteries and outputs a stable 5 V supply for your circuits. Built around the TI TPS61032 boost chip, it accepts input voltages from 1.8–4.5 V and delivers up to 5 V @ 1 A — ...

SKU: SF-BOB-11771 | Brand: SparkFun

This is a breakout board for the Texas Instruments TXB0104 module. The TXB0104 is a 4-bit bidirectional voltage-level translator with automatic direction sensing. This 4-bit noninverting translator uses two separate...

SKU: AF-62 | Brand: Adafruit

This here is your standard A-B USB cable, for USB 1.1 or 2.0. Perfect for connecting a PC to your Arduino, USBtinyISP (among other things).3 feet / 1 meter longColor may vary!

SKU: SF-CAB-11301 | Brand: SparkFun

A 6-foot (1.8 m) USB 2.0 cable with a Type-A plug on one end and a Mini-B 5-pin plug on the other. Use it to connect cameras, USB hubs, FTDI programmers, LiPo chargers, and other devices that use the Mini-B connector....

SKU: SF-PRT-11214 | Brand: SparkFun

MOSFETs are awesome. They’re like a switch that you flip electronically! This SparkFun MOSFET Power Controller makes it easy to switch a battery supply on and off using your favorite microcontroller. The board also ha...

SKU: AF-411 | Brand: Adafruit

A small adapter that converts a standard 5.5 / 2.1 mm DC barrel plug into a 4.0 / 1.7 mm plug, letting you use common 2.1 mm wall adapters with devices that have a smaller 1.7 mm DC jack input. Key Features 2.1 mm ...

SKU: SF-ROB-13065 | Brand: SparkFun

This is a 12 wire slip ring, a remarkably simple electromechanical assembly that allows electronic signals to be passed through its rotating innards. Commonly, you’d find slip rings in wind turbines, radar antennae, o...

SKU: AF-3238 | Brand: Adafruit

This IEEE 802.3af PoE splitter separates power and data from a single PoE Ethernet cable, providing regulated 12VDC at up to 1A on a standard 2.1 mm DC barrel jack alongside a standard Ethernet data connection. It let...

SKU: DF-DFR0362 | Brand: DFRobot

Wireless charging uses an electromagnetic field to transfer energy between two objects. This is usually done with a charging station. Energy is sent through an inductive coupling to an electrical device, which c...

SKU: AF-3310 | Brand: Adafruit

A 5.5×2.1mm DC barrel connector plug for adding a standard power connector to the end of your own wires. The outer shell unscrews to reveal solder terminals and a crimp strain relief, making it easy to wire up custom ...

SKU: AF-3286 | Brand: Adafruit

A slim 3×AAA battery holder with a built-in on/off switch, JST 2-pin connector, and an ergonomic belt clip. The series configuration outputs approximately 3.6–4.5V — a similar range to lithium-ion batteries — making i...

SKU: AF-3287 | Brand: Adafruit

A compact 3×AA battery holder with a built-in on/off switch, JST 2-pin connector, and an ergonomic belt clip. The series configuration outputs approximately 3.6–4.5V — a similar range to lithium-ion batteries — making...

SKU: SF-PRT-10592 | Brand: SparkFun

This is the SMD version of PRT-07948, which is the unit we like to use as RTC backup and SRAM backup for GPS units. Holds battery in place with friction. The metal housing connects to the positive side of the batte...

SKU: SF-PRT-10512 | Brand: SparkFun

A snap-in 9V battery holder with a 5.5mm/2.1mm centre-positive barrel jack connector. The battery clicks securely into place, and three mounting holes allow you to attach the holder to an enclosure or chassis. Key Fe...

SKU: AF-574 | Brand: Adafruit

Put a current meter anywhere with this very handy display. This panel meter requires a DC voltage to run, and then has two thick gauge wires to measure current draw. A shunt is already on board so its very easy to hoo...

SKU: SF-PRT-10287 | Brand: SparkFun

This adapter allows you to connect a barrel jack connector to bare wires. One end has screw terminals and the other has a 5.5x2.1mm, center-positive male barrel jack. If you need to connect bare wires to a barrel jack...

SKU: SF-PRT-10255 | Brand: SparkFun

The LiPower board is based on the incredibly versatile TPS61200 boost converter. The board is configured to be used with a LiPo battery, has solder jumper selectable 5V and 3.3V output, and an under voltage protection...